People throw around "mind=blown" and "nerdgasm" around so much I can't think of anything demonstrative enough to describe how fucking cool this is, and how it makes me feel inside. An eternity from our perspective. By N. Ingraham , 02.04.2021 [–]Red0817 26 points27 points28 points 7 years ago (0 children), [–]Troomaan 8 points9 points10 points 7 years ago (0 children). Headphones owned (past and present - the good, the bad, the ugly): Apple Airpods, Apple Airpods Pro, Audio Technica ATH-MSR7, Beats EP On-Ear, Beats By Dre Studio 2.0, Beats By Dre urBeats, Beyerdynamic Aventho Wireless, Beyerdynamic Aventho Wired, Beyerdynamic Beat Byrd, Bose QC 35ii, B&W P5, B&W P7, B&W PX, B&W PX7, Sennheiser IE80, Sennheiser Momentum True Wireless, … And no, we have nothing to worry about. Is there any chance that this meteoroid could have broken off of Asteroid 2012 DA14? It is a train ride, an underground excursion, and a circus all in one. Turns out that they’re not alone here, somebody watches their moves and controls evil robots. Many amateur astronomers contribute to this effort. It was paid in full and the engineer retired again in peace. I examined the meteorite for him and was spellbound by this incredible rock, which was unlike anything I'd ever seen. I'm simple. My humble suggestion is to fix that little discrepancy... [–]cableshaft 56 points57 points58 points 7 years ago (15 children). You have to wonder what they must have thought about such events. "We can only register stones coming from the direction of the night sky," he explained. [–]RandomMandarin 5 points6 points7 points 7 years ago (0 children). We currently have NO defense against asteroids. That equals 2/3 x pi x R2, corresponding to a cross-sectional radius of sqrt(2/3)*R. The angle between that and the radius vector is 35.3 degrees. Malkov confirmed that the meteor shower in the Urals was not connected to the 2012DA14 asteroid that will approach Earth in a few hours. A friend of mine brought a funny rock into the laboratory and asked me to collect some spectra on it. It was too small to reach the ground without breaking up in the atmosphere, so it didn't create an explosion crater on the ground like that seen in Meteor Crater, Arizona. [–]RandomMandarin 1 point2 points3 points 7 years ago (0 children), [–]kirstencarlson 2 points3 points4 points 7 years ago (2 children). The 'darkness' of a rock out in space is called its albedo, which tells you how much light it reflects. It WAS a meteorite called Portales Valley, and meteorites are actually very easy to come by, and are wonderful in the sense that they are ancient relicts of the formation of our Solar System that you can actually hold in your hand. Ask anything and everything you can think of - they'll either help you, or you didn't really want their advice anyways because they suck. [–]adamjf09 9 points10 points11 points 7 years ago (9 children). (self.IAmA). Yes it does! Audiobooks, Unique Canadian freshwater site now digitising over 50 years of scientific data, Something uncommon that plays a central role in your life, or, Proof should be included in the text of the post when you start your AMA. So... do the exhibits come to life at night? [–]DrMarcFries[S] 64 points65 points66 points 7 years ago (2 children), [–]SkiesAreGrey 3 points4 points5 points 7 years ago (1 child). [–]DrMarcFries[S] 31 points32 points33 points 7 years ago (7 children). use the following search parameters to narrow your results: AMAs are scheduled in Eastern Time (GMT-4:00). What dangers does a meteor of this size pose? The one I was thinking of I couldn't find. He is an ardent Liberal that believes tolerance is essential. He's going to become a meteorite anthropoligist, where he tries to defend the claim that he is a meteorite. Why is that? If there was a huge meteorite hurtling towards earth that would cause significant damage to society or completely wipe out civilization, would astronomers tell us ahead of time? [–]Ivanbionic 1 point2 points3 points 7 years ago (3 children), [–]Mikeydoes 1 point2 points3 points 7 years ago (2 children). [–]Troomaan 15 points16 points17 points 7 years ago (4 children). Trying to find these ones against the black night sky is a challenge. AS is a meteorite recovered from Sudan that was detected in space before it fell to Earth, so we knew when and where it was going to fall. I'm neither an audio-engineer, nor an audio-programmer, nor audio-user / musician / DJ or whatever. [–]B0Boman 8 points9 points10 points 7 years ago (1 child), [–]Wangeye 11 points12 points13 points 7 years ago (0 children). Here's an audio interview with Neil deGrasse Tyson where he mentions that. As for stopping them? An asteroid plunging straight into the atmosphere MIGHT have a better chance of reaching the ground than one that enters at a glancing angle, but it depends strongly on the velocity, mass, and mechanical strength of the asteroid. The meteoroid that struck today would not have reached the ground in any event; it was too small. How often do people come to you with chunks of things like hematite or other oddly shaped mineral deposits and ask you if they are from space? Wiki said meteorites are most likely to impact at 45 degrees. Many, many tons of alien goodness... http://en.wikipedia.org/wiki/Hoba_meteorite. In what way would it be possible to prevent the extinction of mankind? It if has a really low albedo, it means the surface material doesn't reflect much of the sun's light, so it's difficult to see out in space. It was once clobbered by a body large enough to create the Moon out of the resulting spray of rubble, and here we still are. Another scientist said the shock wave was directed downward due to its shallow trajectory. WELL F*** YOU GUYS!"? You're welcome! [–]justmytwobreasts 75 points76 points77 points 7 years ago (1 child), [–]Hellshield 5 points6 points7 points 7 years ago (0 children), [–]kellison 1 point2 points3 points 7 years ago (3 children). Thank you so much for doing this! Saint-Exupery identified the rock as a meteorite, as the only way it arrived was from the canvas of stars above, "just as a blanket spread under an apple tree receives only apples". “The second coming of the high-quality Model F (not to be confused with its more affordable plastic successor, the Model M) isn’t a throwback attention grab from IBM, nor a nostalgia play from Big Keyboard. There are several advanced features such as electrical circuits and smart modules that are accessible for skilled engineers to build self-driven mechanical vehicles or creatures. [–]300saders93 11 points12 points13 points 7 years ago (4 children). How big must a meteorite be to destroy say, an average house? An object with more sylicates and metals would be less reflective than one with more ices and would therefor be harder to spot. A web search will get you there, though. Sounds like a mistake to me. [–]DrMarcFries[S] 336 points337 points338 points 7 years ago (15 children). [–]mikey6 4 points5 points6 points 7 years ago (0 children), [–]Blitchy_Blitch 38 points39 points40 points 7 years ago (4 children). Another explanation could be of their composit. [–][deleted] 116 points117 points118 points 7 years ago (2 children), [–]stonesia 27 points28 points29 points 7 years ago (0 children), [–]thirdrail69 13 points14 points15 points 7 years ago (3 children). If I lived in that village I'd be out collecting for weeks. 13 Dec 2020 The Steelers have qualified for a spot in the AFC Playoffs. It seems like a big coincidence. [–]mygrapefruit 25 points26 points27 points 7 years ago (3 children), 2 m approx "The Telegraph has an elegant graphic illustrating the perpendicular paths of the meteor and the asteroid", [–]ComradeCube 36 points37 points38 points 7 years ago (2 children). [–]Sleekery 5 points6 points7 points 7 years ago* (1 child). I'm a geology major and I want to go into planetary geology. Many asteroids contain a significant amount of carbon, and so they can be very dark to look at. Heheheh Meteors like today's must have occurred during Mayan times as well. Compare that to 2012 DA14 passing by the Earth later today, which is twice that diameter! (Also, unrelated, but I'm starting an internship with the Smithsonian in a couple weeks, what are some fun things to do in the DC area? Bear in mind that that is a VERY rough guess, though! Individuals can still go rogue if they choose to, but the entire planet ain't going to. How long until we start collecting raw materials from space? [–]DrMarcFries[S] 56 points57 points58 points 7 years ago (9 children). A group of kids from Raven Brooks, members of the Inventors club, go to the abandoned Golden Apple Amusement Park to scavenge for resources to win the State Inventors Contest. I am Rodney Ascher. I am Dr. Marc Fries, a senior scientist at the Planetary Science Institute in Tucson, Arizona, and a visiting scientist at the Smithsonian Institution. Want to match your creation against other players' machines? Using frame parts, gears, engines, wheels, weapons, and even jet engines from the. [–]ndnOUTLAW 14 points15 points16 points 7 years ago (6 children). Not like sorta kinda looks like an Apple Watch — it really, deliberately, looks almost exactly like a pre-Series 4 Apple Watch. IAmA Smithsonian meteorite scientist. I've heard of rocks. Why do these objects "explode" at a certain altitude, rather than slowly burning up little by little to nothing? In a meteoroid's case, that belly flop into the atmosphere occurs at speeds high enough to turn solid rock into a superheated gas, and quickly enough to slow down from 10s of kilometers per second to tens of meters per second, all in only a few seconds' worth of blazing fireball. Time to go tell a bunch if people. [–]breeyan 1 point2 points3 points 7 years ago (0 children), [–]kadf 28 points29 points30 points 7 years ago* (5 children). Put together incredible machines built of scrap, and beware of the Neighbor. Under the banner of Taeha Types, 24-year-old Twitch streamer Tae Ha Kim designs and assembles high-priced keyboards on commission by sourcing rare and limited-run … How common is it for meteorites to contain radioactive or otherwise harmful material? Ask me anything! Thank you for answering my question! ...but not zero. The little inventors need to use all their engineering skills to escape from the amusement park complex and to not let the Neighbor hunt them down. [–]DrMarcFries[S] 94 points95 points96 points 7 years ago (18 children). AMA! The description in that article says there are small, dark stones 0.5 to 1 cm in size among the icy debris. That's the simple version. I've answered the first one already, so I'll answer the second one here. :-) , [–]CanIGetAHolla 1 point2 points3 points 7 years ago (0 children). How would a shock wave behave on a steep angle meteor and why the difference? The 128kB L1 cache of Apple's M1 means that L1 cache fits the most "instrument data" (or so I've been told). There are no "new" elements in meteorites, in the sense that there's nothing in there that we haven't seen on Earth already. How is the search conducted to find the bits that fell to earth (falls)? [–]DrMarcFries[S] 54 points55 points56 points 7 years ago (7 children). That, and people got hurt. How big of a bomb would Bruce Willis have needed to blow up that metor? When looking at acoustic pianos, there are so many variations that can lead to differences in tone: upright vs. grand, hammer types, mechanical condition, the player, mic choices, and mic techniques. It's like doing a belly flop into a swimming pool - sure, the water is nice and liquid and squishy, but if you hit it hard and slow down quickly, it's gonna hurt! [–]Beard_of_Valor 63 points64 points65 points 7 years ago (0 children). Ever since my wife and I moved into our current house, we’ve been frustrated with our kitchen lighting. About how often do meteors of about the same size as the one from today enter our atmosphere? Meteoroids are moving between ~10 and 80, even 100 km/s when they hit the top of the Earth's atmosphere. What's your favorite meteor/meteorite occurrence in history that you find fascinating? [pi * (sqrt(1/2) * (radius of earth))2] / [pi * (radius of earth)2] = 1/2, The square root comes from the 45-45-90 triangle from the center of the Earth to the surface. Meteoroids (that is, a body smaller than as asteroid) of this size strike the Earth's atmosphere about once a decade or so. There are iron meteorites, which are formed when molten iron-nickel coalesced into the infernal core of a larger body, then that body was broken up to scatter its iron heart through the cosmos. Stadia & PC [–]DrMarcFries[S] 40 points41 points42 points 7 years ago (3 children). (A meteoroid is a small rock flying through space, and a meteorite is one that reaches the Earth's surface) I'm afraid I don't know exactly, but it will be about the size of the parent asteroid of Almahatta Sitta (AS). The science/art of finding meteorites includes assembling eyewitness accounts, some trigonometry-heavy analysis of videos and pictures to re-create the path of the body, and some physics-based calculations of the expected flight paths of falling meteorites. Another proposal I saw which I thought was interesting just for the oddness of it was to basically send a probe to spray paint half of such an object white, and half black; the change in albedo would heat the black half while keeping the white half cool, causing more evaporation of materials on the black side, which would, in turn, generate a small amount of thrust to adjust the object's orbit. Professor of psychology at the University of California, Davis. Would/could life survive entry into an atmosphere? [–]DrMarcFries[S] 16 points17 points18 points 7 years ago (1 child). Did no space agencies around the world notice this? If it were larger, it might have survived the trip to the ground and formed an explosion crater. [–]Tess47 9 points10 points11 points 7 years ago (4 children). Obviously he didn't die there... [–]NvaderGir 8 points9 points10 points 7 years ago (0 children). I deeply appreciate it! Website The best option, if we had all options available, would be to have thriving human civilizations on multiple planets and moons. [–]DrMarcFries[S] 2 points3 points4 points 7 years ago (1 child), [–]MicroCosmicMorganism 1 point2 points3 points 7 years ago (1 child). [–]lets_dance 26 points27 points28 points 7 years ago (20 children). so what are the routes scientists think are good? So, possibly final answer is that the mean of asteroid incoming angles is 35.3 degrees from the ground? Most rocks that people bring to me are not meteorites, but I'm happy to show them what a real meteorite looks like and offer advice on how to find them. Does the phrase "meteoric rise" when used to describe someone who has obtained some sort of fame frost your cookies? ", I asked her what she did, and she said "Majoring in geology." On Earth, rocks usually are radioactive if they are part of a radioactive element's ore. That requires the movement of a lot of hot water in the Earth's crust, and that process does not happen on asteroids. [–]DrMarcFries[S] 310 points311 points312 points 7 years ago* (11 children). Oh you bet they would. [–]Arkhamina 5 points6 points7 points 7 years ago (1 child). The headphones’ price tag has been a huge subject of discussion, and … And there have been several very large events like this over the past few decades. Some meteoroids get by because they're too small and/or dark to be seen by optical telescopes. [–][deleted] 1 point2 points3 points 7 years ago (2 children). The Earth is way to big to knock it out of orbit, luckily. New goal in life, become a meteorite anthropoligist... [–]tynap 212 points213 points214 points 7 years ago (13 children), [–]SeeMoore209 69 points70 points71 points 7 years ago (0 children), [–]Gaaargh 61 points62 points63 points 7 years ago (7 children), [–]VincentOfEngland 24 points25 points26 points 7 years ago (2 children). I shouldn't try to remember stuff from years ago at 2:30 AM.). Stranded, he walked around the plateau. Hello Engineer is a multiplayer machinery-building construction game set in the Hello Neighbor universe. It seems this Chelyabinsk event caught everyone by surprise and wasn't on anyone's proverbial or literal radar... [–]DrMarcFries[S] 11 points12 points13 points 7 years ago (1 child). The best way to find out will be to compare the trajectories of the two bodies and see if they are similar. I enjoy it, actually. Just speculation. Perhaps he/she was saying that the shock wave follows the ground track of the meteor, and so it would propagate over a longer "footprint" on the ground than if it plunged steeply into the atmosphere...? [–]DrMarcFries[S] 4 points5 points6 points 7 years ago (0 children), Very unlikely. The universe is slightly emptier today. We won't know exactly what kind until the fragments are examined by an expert. Form a plan, but be willing to change it as you go. © 2021 reddit inc. All rights reserved. [–]TheKert 7 points8 points9 points 7 years ago (2 children). I'm Virginia NORML’s executive director and we’re working on marijuana legalization. You could write headlines for the Daily Mail. If it must remain confidential, you can. Suppose that we have spotted a meteorite, that will inevitably collide with Earth in, let's say, a decade. https://hello-neighbor.fandom.com/wiki/Hello_Engineer?oldid=27665. Release Chronology As for keeping them, that depends on the law of the land where you found the thing. Any way to estimate how big this one was? As for DC - go ride the Metro and watch the people. Now, Moser has released their “Final Upgrade” edition, and Bilal Khan at A Blog to Watch has the details: [–]TecumsehSherman 13 points14 points15 points 7 years ago (4 children). There in the moonlight, he found an odd, dark rock that had no place there. [–]granticculus 31 points32 points33 points 7 years ago (0 children), The Sun is also suspected of supplying nuclear energy to Al Qaeda, [–][deleted] 21 points22 points23 points 7 years ago (3 children). [–]SuperNixon 51 points52 points53 points 7 years ago (10 children). Some US agencies like the BLM are forward-thinking enough to have policies in place on what you can keep for yourself. Most of the meteoroid was destroyed - the bright part of the fireball was basically the process of turning stone into gas. The engineer responded briefly: One chalk mark $1; Knowing where to put it $49,999. Apple & Google's changes for CC are mostly in the tokenization standard, building the backends for issuers. "RAWNING!" Why are you reading this thread then? Yay, science! There are some whose origins are still mysteries, as well. And does the 'and/or' mean that we could have a massive but dark one which would still get past our monitoring? Where the Mayans off by 2 months or what? No, no, you've got it all wrong. I'm assuming that's what DrMarcFries is referring to. And there you have it. Have too many moving parts and need more hands to control it? As it is, the damage it could cause was pre-programmed into it by its size. Basically, once you measure the angles in the pictures and videos and locate the spot where the pics were taken, it is a matter of trigonometry. This page is undergoing changes. [–]Stayupbraj 12 points13 points14 points 7 years ago (4 children). Sorry, ladies and gents, but my fingers are now ground down into nubs and I need to stop. what would the temp of this likely be the moment it hits the ground? What about reports of this meteor strike in Cuba today? If we were able to harvest the astroid it would be worth that much due to the costs saved by eliminating the need to transport materials (materials found on the astroid) into outerspace from the ground. I realize that it would be stupid to not spend money in that area. (Someone please check my work. If you're looking straight down at the Earth, you're looking parallel to one of the short legs, while the other short leg is perpendicular to you. Developer(s) [–]DrMarcFries[S] 9 points10 points11 points 7 years ago (1 child). I study meteorites and early Solar System formation and am here to answer any questions you may have about the meteor over Russia, the "near miss" by asteroid 2012 DA14, or any other questions you may have about meteors and meteorites. What are the chances that the meteor that exploded over Russia yesterday was a fragment or a tag-along of the asteroid that's zooming past the Earth today? Today (yesterday) it burnt up in he atmosphere and ceased to exist. It's my understanding that they were on different trajectories, so it's unlikely they're related. That's the age of most meteorites. My favorite meteorite is the one I most recently handled. Panam in Cyberpunk2077. How did you become an expert in meteors and meteorites? [–]Shuawuzheer 43 points44 points45 points 7 years ago (16 children). More than you think you need to. That's a tough one. Edit #2: Then again, ilrasso said that "the most probable", or mode would be 45 degrees, while you took that to mean the average (mean). [–]DrMarcFries[S] 65 points66 points67 points 7 years ago (3 children). Would it be safe to pick up immediately, or would it need to cool? Today's event seems like quite a coincidence. [–]ilrasso 33 points34 points35 points 7 years ago (26 children). Chadwick Boseman played a superhero on the big screen, but he had a real-life superpower—the ability to inspire the next generation of underrepresented scientists, engineers, and innovators. How likely is it that we shall see an "Extinction event" causing meteorite in our lifetime? What is your favorite mind boggling scientific fact? -I also heard that the one flying by is worth $195 billion, is the one that hit Russia (or whats left of it) worth anything near that amount you think? Did the whole meteor break up into smaller pieces during entry? With that said, falling meteorites can still cause damage. This is the second multiplayer game in the, This is the first game to be released initially on. But your average meteorite has been around for the entire outstretched-arms distance - for 4.5 billion years! I've seen pictures of a hole in an icy lake that seems to have been caused by a falling meteorite. For example I'm an amateur collector and I have a soft spot for Allende , I have a small slice and its just fascinating in terms of its age and composition. Thank you! 195, No. [–]DrMarcFries[S] 48 points49 points50 points 7 years ago (30 children). Would the astronomers? It managed to get pretty close to Earth before it was seen, so that's probably the lower size limit for detection. There are many different images but most are too far away to see much. Is this a rare event? What is the smallest meteorite we are able to detect from space? Ask Me Anything. The most interesting thing is basically that our Solar System is composed of many bodies, all orbiting the Sun and still running into each other even today. Thanks. According to CNN it came from the North, opposite trajectory. and join one of thousands of communities. [–]BridgetteBane 39 points40 points41 points 7 years ago (16 children). This is why, in theory, microscopic life forms could arrive in a meteor and still be alive. Do you believe in the concept of panspermia? Before a few prominent meteorite falls a few centuries ago, this fact that we take for granted today was not commonly accepted. As it is, the damage it could cause was pre-programmed into it by its size. Why did this one flare up in the air a few seconds before impact, it was already well inside our atmosphere by then at least from the looks of it? But, 70% of our planet is covered by oceans, so that's where it usually happens and we are unaware. Hello Engineer is a multiplayer machinery-building construction game set in the Hello Neighbor universe. Thank you for your questions! LOTS of people - professors, other students, scientists, grad students. No we did not. Unity If one were spotted on a collision course with Earth, we could make preparations on the ground but there is no real plan in place right now for dealing with it before it strikes our planet.